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233e7676 | 1 | ;;; GNU Guix --- Functional package management for GNU |
06172df5 | 2 | ;;; Copyright © 2012, 2013, 2014, 2019 Ludovic Courtès <ludo@gnu.org> |
93b3a8b0 | 3 | ;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il> |
e2b2c466 | 4 | ;;; |
233e7676 | 5 | ;;; This file is part of GNU Guix. |
e2b2c466 | 6 | ;;; |
233e7676 | 7 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
e2b2c466 LC |
8 | ;;; under the terms of the GNU General Public License as published by |
9 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
10 | ;;; your option) any later version. | |
11 | ;;; | |
233e7676 | 12 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
e2b2c466 LC |
13 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | ;;; GNU General Public License for more details. | |
16 | ;;; | |
17 | ;;; You should have received a copy of the GNU General Public License | |
233e7676 | 18 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
e2b2c466 | 19 | |
1ffa7090 | 20 | (define-module (gnu packages flex) |
4a44e743 | 21 | #:use-module (guix licenses) |
e2b2c466 LC |
22 | #:use-module (guix packages) |
23 | #:use-module (guix download) | |
24 | #:use-module (guix build-system gnu) | |
06172df5 | 25 | #:use-module (guix utils) |
59a43334 | 26 | #:use-module (gnu packages) |
1ffa7090 | 27 | #:use-module (gnu packages m4) |
83dcfa72 | 28 | #:use-module (gnu packages man) |
1ffa7090 | 29 | #:use-module (gnu packages bison) |
0160458b | 30 | #:use-module (srfi srfi-1)) |
e2b2c466 | 31 | |
0160458b | 32 | (define-public flex |
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33 | (package |
34 | (name "flex") | |
93fabf59 | 35 | (version "2.6.4") |
e2b2c466 | 36 | (source (origin |
83dcfa72 DC |
37 | (method url-fetch) |
38 | (uri (string-append | |
39 | "https://github.com/westes/flex" | |
40 | "/releases/download/v" version "/" | |
2dca204e | 41 | "flex-" version ".tar.gz")) |
83dcfa72 DC |
42 | (sha256 |
43 | (base32 | |
2dca204e | 44 | "15g9bv236nzi665p9ggqjlfn4dwck5835vf0bbw2cz7h5c1swyp8")))) |
e2b2c466 | 45 | (build-system gnu-build-system) |
2aa76ee1 LC |
46 | (inputs |
47 | (let ((bison-for-tests | |
83dcfa72 DC |
48 | (package |
49 | (inherit bison) | |
06172df5 LC |
50 | (arguments |
51 | ;; Disable tests, since they require flex. | |
52 | (substitute-keyword-arguments (package-arguments bison) | |
53 | ((#:tests? _ #f) #f))) | |
2aa76ee1 | 54 | (inputs (alist-delete "flex" (package-inputs bison)))))) |
33f460ad | 55 | `(("bison" ,bison-for-tests)))) |
ba42199e | 56 | ;; m4 is not present in PATH when cross-building |
83dcfa72 DC |
57 | (native-inputs |
58 | `(("help2man" ,help2man) | |
59 | ("m4" ,m4))) | |
e2b2c466 | 60 | (propagated-inputs `(("m4" ,m4))) |
83dcfa72 | 61 | (home-page "https://github.com/westes/flex") |
9e771e3b | 62 | (synopsis "Fast lexical analyser generator") |
e2b2c466 | 63 | (description |
35b9e423 | 64 | "Flex is a tool for generating scanners. A scanner, sometimes |
e2b2c466 | 65 | called a tokenizer, is a program which recognizes lexical patterns in |
35b9e423 | 66 | text. The flex program reads user-specified input files, or its standard |
e2b2c466 | 67 | input if no file names are given, for a description of a scanner to |
35b9e423 EB |
68 | generate. The description is in the form of pairs of regular expressions |
69 | and C code, called rules. Flex generates a C source file named, | |
70 | \"lex.yy.c\", which defines the function yylex(). The file \"lex.yy.c\" | |
71 | can be compiled and linked to produce an executable. When the executable | |
e2b2c466 | 72 | is run, it analyzes its input for occurrences of text matching the |
35b9e423 | 73 | regular expressions for each rule. Whenever it finds a match, it |
e2b2c466 | 74 | executes the corresponding C code.") |
166191b3 | 75 | (license (non-copyleft "file://COPYING" |
83dcfa72 | 76 | "See COPYING in the distribution.")))) |